Aqualytic SensoDirect CD 19 User manual

SensoDirect CD 19
Operating Instructions Conductivity Meter
CAL
0
46
10
28
¡C
0
4060
100
2080
GB

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Declaration of CE-Conformity
The manufacturer: Tintometer GmbH
Schleefstraße 8 a
44287 Dortmund
Deutschland
declares that this product
Product name: SensoDirect CD 19
with all optional items conforms to the following regulations:
EMC EN 61326 : 1997+A1:
1998+A2 : 2001
EN 55022 Class B : 1998
The product conforms to the regulations of the
EMC Directive 89/336/EEC and 73/23/EEC.
Dortmund, March 12, 2003
Cay-Peter Voss,
Managing Director

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Contents Seite
1. General description .......................................................... 4
2. Products supplied ............................................................ 4
3. Setting to work ................................................................. 4
4. Calibration ........................................................................ 4
5. Carrying out measurements ............................................. 5
6. Overhaul and maintenance ............................................... 6
7. Changing the battery ........................................................ 6
8. Spare parts / accessories ................................................. 6
9. Technical data .................................................................. 6
10. Short Instructions ............................................................. 8

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1. General Description
The "SensoDirect" is a small, handy measurement
device, which can be used anywhere where conduc-
tivity has to be measured quickly and accurately. The
unit is very easy to use and is fitted with a digital dis-
play, reading to 2 decimal points. The measurement
range is 0 - 10.00 mS/cm. Because conductivity meas-
urement is dependent on temperature, the unit has a
manual temperature compensation facility, from
0 - 100 °C.
2. Products supplied
• SensoDirect Basic unit, including electrode
• carrying case
• operating instructions
3. Setting to work
The unit is supplied as standard with a battery and is
therefore ready for immediate use, once the cinch
connector plug to the pH electrode is inserted into its
socket. The unit is switched on and off with the red
push-button to the side of the electrode connection.
4. Calibration
To ensure optimum accuracy of measurement, the unit
should be calibrated regularly. Determine the
temperature of the calibration solution and turn the
right-hand knob (the temperature compensation
control) to set the temperature which has been
determined : 1 line-mark is roughly equivalent to 10°C.
Rinse the electrode in fully demineralized water, dry it

5
carefully and immerse it in the calibration solution,
moving it gently to and fro so that any trapped air
bubbles can escape through the side openings. Wait
for some 15 to 20 seconds (until the display stabilizes)
and then turn the left-hand knob (Adjust mS/cm) to
set the appropriate figure.
To achieve optimum measurement accuracy from the
system, adjustments should be made until the
adjustment figure and the expected measurement
figure are in the same range. This may cause accuracy
over the total measurement range to reduce slightly
under certain circumstances.
To maintain the instrument specification, adjustments
in the factory are made using a 0.05 molecular KCl
solution at a temperature of 25°C (6.7 mS/cm).
5. Carrying out measurements
First of all, determine the temperature of the medium
to be measured and set the appropriate temperature
by turning the right-hand knob. Then rinse the electrode
thoroughly in fully demineralized water and dry it
carefully. Immerse the electrode in the medium to be
measured and move it gently to and fro. Wait for some
15 to 20 seconds (until the display stabilizes) and then
read the figure in the display. Always wash the electrode
in fully demineralized water when measurements have
been completed.
NOTE :
The display reads in mS/cm.
1 mS/cm = 1000 µS/cm / 0.1 mS/cm = 100 µS/cm
Overrange is indicated by three decimal points in the
Display, e.g. 1.4.1.4 .

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6. Overhaul & Maintenance
Conductivity electrodes do not generally deteriorate
with age. However, their life and performance can be
reduced by deposits, contamination or mechanical
damage. It is therefore recommended that the
electrode be cleaned from time to time in warm water,
using a small brush with great care.
The electrode must NEVER come into contact with
any water-repellent substances (oils; greases;
silicones).
7. Changing the Battery
If "BAT" appears in the bottom left corner of the display,
the battery is flat and must be replaced. Remove the
back of the unit by loosening the 6 screws and replace
the battery.
Due to the electronic design the „BAT“ indication
disappears if the battery is nearly empty. Readings
under these conditions are faulty.
8. Spare Parts / Accessories
Article No. Description
42 12 15 Conductivity calibration solution
1413 µS/cm (250 ml)
42 12 16 Conductivity calibration solution
6,7 mS/cm (250 ml)

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9. Technical Data
Measurement range: 0 - 10,00 mS/cm
Resolution: 0,01 mS
Accuracy: +/- 2,5 % of range +/- 1 digit (Inst.)
Electrode: PETP shaft; Electrode material: graphite
Ambient conditions: 0 - 45 º C
0 - 80 % relative humidity
(non-condensing)
Power supply: 9 V pack; ca. 100 operating hours
Housing: ABS plastic housing
Dimensions: 165 x 95 x 42 mm (LxBxH)
Weight: ca. 280 g (without electrode)
Certified: CE
Cat. No.: 418 819
Temperature
Compensation: 0 - 100°C, manual

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9. Short Instructions
Temperatur
CAL.
Sensor
Dry
Dry
General
3
ON
OFF
ON/OFF
1
2
Instrument
CAL
0
46
10
28
°C
0
40 60
100
20 80
Range: 0.00 - 10.00 mS/cm
Resolut on: 0.01 mS/cm
Accuaracy: ± 2.5 % F.S. ± 1 D g t (Instrument)
Amb ent 0 - 45°C
Cond t ons: 0 - 80% rel. hum d ty
(no condens ng)
Sample
Cond t ons: 0° - 80° C
Battery: 9 V (IEC 6F22)
CE: 89/336/EN
(add. Tolerance < 1%)
Sensor
Clean
Deonzed
Water
Adjust
Temperature
Value
Read
SAMPLE
225°
25°
Measurement
CAL
0
46
10
28
°C
0
40 60
100
20 80
Sensor
Clean
Deonzed
Water

9
Calibration
Clean
Deionized
Water
Dry
Measurement
Maintenance
Remove
6 screws
9 V
Replace
9 V Battery
Typ IEC 6F22
Don`t
touch
LOW BAT
D splay
Remove battery f nstrument s unused for a long t me.
Clean
Deionized
Water
Dry
CAL
Adjust
mS/cm
6.70
D splay
0.05 mol/l
KCl
2
25°
1
Adjust
Temperature
25°
CAL
0
46
10
28
°C
0
40 60
100
20 80

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9. Guarantee Information
Warranty
As the manufacturer of the unit and its accessories,
the Tintometer Group
extends a
warranty of two years
on new units to the end user from the date of pur-
chase, on the condition that the unit is used and main-
tained in the proper manner.
Warranty conditions
This warranty is only valid if:
1. the unit is not damaged due to leakage from
(storage) batteries, is not subject to incorrect use
or maintenance, negligence or other causes other
than those due to material or production faults.
2. the unit is returned accompanied by a full
description of defects. The warranty does not
cover electrodes, accessory items and defects
which only impair the use of the instrument to a
minor degree.
Scope of warranty
If a fault occurs during the warranty period the unit
must be returned to a Tintometer Group Company or
an appointed Agent. The unit will be inspected and all
defects caused by materials or production faults will

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be repaired or remedied using spare parts of the ap-
propriate quality, free of charge.
Further claims, in particular for compensation for dam-
age not affecting the unit itself, are excluded.
The manufacturers warranty exists alongside the legal
warranty rights of the end user and is not affected if
his contract is with a third party.
Proof of warranty
Proof of purchase is required as entitlement to claim
under warranty. If relevant paperwork is not submitted
the repairs will be chargeable at the service prices
pertaining at the time of repair.
Please return the unit complete with its packaging, full
description of defect and purchase receipt.

AQUALYTIC®
Schleefstraße 12
D-44287 Dortmund
Tel.: (+49) (0)2 31 / 9 45 10 - 755
Fax.: (+49) (0)2 31 / 9 45 10 - 750
[email protected]
www.aqualytic.de
Germany
Technical changes without notice
Printed in Germany 08/04
QM-System
Certificate No. 5394
DIN EN ISO 9001